Malicious PDF — malware analysis report

Static analysis result for SHA-256 d63156eafb1db596…

MALICIOUS

PDF

97.3 KB
MD5: d01c31bc68ce876c7441e10f5bf8a4a6 SHA-1: f0ba979e225ead0ced91c1f0234bbc6f372fae40 SHA-256: d63156eafb1db5964533f89eb471185c0e56f59f0c6d625371b4a64cc80a9dc4
118 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File T1204.002 Malicious File: User Execution: Malicious PDF T1059 Command and Scripting Interpreter

The PDF was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Exploit.Agent-6136306-0', and an ML classifier indicating a high probability of maliciousness. The presence of an XFA form and an embedded script payload suggests an exploit targeting PDF viewers. The embedded script is likely responsible for executing the malicious payload, although its specific actions are not detailed in the provided evidence.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_0000026c.bin
03e71268b6327b209965b8322eb2ffcc3e4dbccc3cde479a34de62d21f22a40b
pdf-embedded-script PDF raw stream script payload at offset 0x26C 98867 bytes